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My friend asked me to repair her Macbook Air (I swear I'll never touch it again) and while removing the panel surrounding the LCD screen with a razor blade (as shown on iFixit), I inadvertently sliced the display cable near the bottom of the screen.

What is the name for this cable? I can't seem to find a replacement - and I don't really want to bring it in to the Apple Store if I can help it.

Also, how easy is it to replace this cable - it's not soldered to the logic board or anything, right?

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The takeapart guide on iFixit sells replacement parts, but expect them to be pricey. The Air is a very, very delicate machine so be warned that getting it put back together takes more grace than getting it apart.

Worst case, you could buy an entire display assembly if you feel you are doing more damage than good by proceeding with this repair. Three cables go into the Air's display assemblyL

  • Wi-Fi antenna
  • Backlight power
  • LVDS cable

I presume you nicked the last one - it has the widest connector to the logic board. The real problem is getting inside the Air's display assembly as I haven't seen that documented anywhere publicly available. That cable might be part of the LCD panel and might be something you could try to buy used from a liquid damaged or physically damaged Air. Here's where the question lacks details to know why you were in there to begin.

What part was being replaced that caused you to need a razor blade on this repair? Are you going inside the display assembly in the first place?

Don't rule out taking it in to the store in a static safe back with your tail between your legs. You will then know if they can fix it by quoting you an out of warranty part cost plus labor to fix things - both what was originally wrong and the things that have now gone not right.

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I was originally replacing the hinges - they both were broken. I completely the repair, so now the only thing that needs to be fixed is the clipped cable. –  Doctor Oreo Nov 20 '12 at 23:14
    
Awesome - you've got a touch nut to crack as that cable is basically impossible to splice and now you need to get inside the clamshell. Perhaps you're there already with the display bezel removed - but you'll need to know which manufacturer made your panel and source the cable. Not an easy task. –  bmike Nov 21 '12 at 0:42
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